Ethereum developers have officially entered the last major development phase of Glamsterdam — the network’s most ambitious upgrade since the 2022 Merge. Teams are now running devnets with the full suite of planned Ethereum Improvement Proposals (EIPs) before moving to public testnets.
What Is Glamsterdam?
Described by core developers as “probably the largest fork we’ve had since the Merge,” Glamsterdam aims to reshape core assumptions about Ethereum and significantly improve scalability, MEV fairness, and execution efficiency.
Expected launch window: Second half of 2026.
Key Features & Major EIPs
| Feature | EIP | What It Changes | Impact |
|---|---|---|---|
| Enshrined Proposer-Builder Separation (ePBS) | EIP-7732 | Moves PBS from offchain to core protocol | Reduces MEV manipulation & centralization risks |
| Block-level Access Lists | EIP-7928 | Blocks declare accounts & storage they will access in advance | Faster, more predictable execution & better ZK proving |
| Sweeping Gas Repricings | Multiple | High-level compute becomes cheaper, state access more expensive | Better reflects real resource costs & aids scaling |
These changes will fundamentally alter the economics of using Ethereum while making the network more friendly to zero-knowledge technology and long-term scaling roadmaps.
Current Status (June 16, 2026)
- Devnets with all EIPs combined are now live and under active testing.
- Next steps: Code hardening → public testnets → mainnet activation.
- No fixed date yet, but “massive progress” has been made according to Ethereum Foundation devops engineer Parithosh Jayanthi.
Why This Matters
- For DeFi & Trading: Better MEV protection and more predictable execution could improve trading strategies and reduce toxic MEV on DEXes.
- For Layer 2s: Gas repricings and access list improvements will help rollups and ZK systems scale more efficiently.
- For the Ecosystem: This is the biggest architectural shift in years — expect significant ripple effects on tooling, gas optimization, and application design.
Glamsterdam represents Ethereum’s continued commitment to long-term scaling and fairness after years of incremental improvements.
The final development stretch has begun. The next 3–6 months of testing will determine exactly how transformative this upgrade becomes.
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